AGAPEROS: Searching for variable stars in the LMC Bar II. Temporal and near-IR analysis of Long-Period Variables

Details AGAPEROS: Searching for variable stars in the LMC Bar II. Temporal and near-IR analysis of Long-Period Variables AGAPEROS: Searching for variable stars in the LMC Bar II. Temporal and near-IR analysis of Long-Period Variables

2002-08-27

arxiv.org/abs/astro-ph/0208471v1

Astron.Astrophys. 393 (2002) 573-584

Astronomy and Astrophysics

Astrophysics

12 pages, 15 figures accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20021042

We analysed the light curves of a large sample of long period variables in the LMC from the AGAPEROS catalogue. The (non)regularity of the light change is discussed in detail showing that the majority of the light curves cannot be described properly by a single period. We show that semiregular and small amplitude variability do not necessarily correlate as has been assumed in several previous studies. Using near-infrared data from the DENIS survey we correlate the light change with colours and luminosities of the objects. These results are used to compare long period variables in the LMC with LPVs in the Galactic Bulge and in the solar neighborhood.

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